题目内容

The boiling and condensation points of a refrigerant depend on the( )exerted upon it.

A. pressure
B. temperature
C. superheat
D. super-cool

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The refrigerant entering the evaporator coil, at a temperature( )than that of thesurrounding secondary coolant ( air or brine) receives latent heat and( )

A. higher; condenses
B. lower; evaporates
C. lower; compresses
D. higher; evaporates

The dew point of air is reached when the wet bulb temperature is( )

A. twice the dry bulb temperature
B. 10°C above the dry bulb temperature
C. 5° C above the dry bulb temperature
D. equal to the dry bulb temperature

The dew point is reached when the wet bulb temperature is( )

A. equal to the dry bulb temperature
B. twice the dry bulb temperature
C. less than the dry bulb temperature
D. 50 C above the dry bulb temperature

The device, which is installed in the compressor suction line to prevent liquid from entering the compressor when hot gas defrosting, is called a( )

A. re-vaporator
B. receiver
C. dehydrator
D. solenoid

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